Christophe Samson is shown yellow for working his way in illegally at the maul

Porical does well to add the extras

Lyon take advantage of a weak defensive line by Castres, Toby Arnold crosses showing good pace

Lyon get the upper hand at scrum time and win a scrum penalty

Lyon are awarded a penalty and Porical puts boot to ball gaining about 30m as they make their way into the home side's half

Stephen Brett kicks to get us underway!

Hello and welcome to Ultimate Rugbys coverage of this afternoons Top 14 action as Castres welcome Lyon to the Stade Pierr Antoine. When Castres went down at Oyonnax a fortnight ago, it left them with no margin for error, and the great escape will have to start at home to Lyon.
Five points from safety with just eight games to go, Castres are in an unfamiliar position. Lose this weekend and any hope of survival will go out the window.
While Richie Gray's season is over, they do have the luxury of some key returns, including that of Rory Kockott, back in the French squad but with an equally important task to complete beforehand.
The South African-born scrum-half has had a tough season, just like his club, but if he can find his form, they stand a chance. Lyon come into the game in good form though, despite slipping back into the bottom two last time out.
On that occasion they snatched a late bonus point at Toulouse, and with three home games in their last four to finish the season, the next month is all about staying in touch before the home straight. Stay with us for live updates and match analysis.